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Diffstat (limited to 'tags/1.2.1/java/org/libjpegturbo/turbojpeg/TJCustomFilter.java')
-rw-r--r-- | tags/1.2.1/java/org/libjpegturbo/turbojpeg/TJCustomFilter.java | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/tags/1.2.1/java/org/libjpegturbo/turbojpeg/TJCustomFilter.java b/tags/1.2.1/java/org/libjpegturbo/turbojpeg/TJCustomFilter.java new file mode 100644 index 0000000..711225b --- /dev/null +++ b/tags/1.2.1/java/org/libjpegturbo/turbojpeg/TJCustomFilter.java @@ -0,0 +1,76 @@ +/* + * Copyright (C)2011 D. R. Commander. All Rights Reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * - Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * - Neither the name of the libjpeg-turbo Project nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS", + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +package org.libjpegturbo.turbojpeg; + +import java.awt.*; +import java.nio.*; + +/** + * Custom filter callback interface + */ +public interface TJCustomFilter { + + /** + * A callback function that can be used to modify the DCT coefficients after + * they are losslessly transformed but before they are transcoded to a new + * JPEG file. This allows for custom filters or other transformations to be + * applied in the frequency domain. + * + * @param coeffBuffer a buffer containing transformed DCT coefficients. + * (NOTE: this buffer is not guaranteed to be valid once the callback + * returns, so applications wishing to hand off the DCT coefficients to + * another function or library should make a copy of them within the body of + * the callback.) + * + * @param bufferRegion rectangle containing the width and height of + * <code>coeffBuffer</code> as well as its offset relative to the component + * plane. TurboJPEG implementations may choose to split each component plane + * into multiple DCT coefficient buffers and call the callback function once + * for each buffer. + * + * @param planeRegion rectangle containing the width and height of the + * component plane to which <code>coeffBuffer</code> belongs + * + * @param componentID ID number of the component plane to which + * <code>coeffBuffer</code>belongs (Y, Cb, and Cr have, respectively, ID's of + * 0, 1, and 2 in typical JPEG images.) + * + * @param transformID ID number of the transformed image to which + * <code>coeffBuffer</code> belongs. This is the same as the index of the + * transform in the transforms array that was passed to {@link + * TJTransformer#transform TJTransformer.transform()}. + * + * @param transform a {@link TJTransform} instance that specifies the + * parameters and/or cropping region for this transform + */ + public void customFilter(ShortBuffer coeffBuffer, Rectangle bufferRegion, + Rectangle planeRegion, int componentID, int transformID, + TJTransform transform) + throws Exception; +} |